import sys
from PyQt4 import QtGui
class Example(QtGui.QMainWindow):
    def __init__(self):
        super(Example, self).__init__(); self.initUI()

    def initUI(self):
        eact = QtGui.QAction(QtGui.QIcon('exit.png'),
                             '&Exit', self)
        tact = QtGui.QAction(QtGui.QIcon('exit.png'),
                             '&Treta', self)
        eact.setShortcut('Ctrl+Q')
        eact.setStatusTip('Exit application')
        eact.triggered.connect(QtGui.qApp.quit)
        tact.triggered.connect(treta)
        self.statusBar()
        mb = self.menuBar(); fm = mb.addMenu('&File')
        fm.addAction(tact); fm.addAction(eact)
        self.setGeometry(300, 300, 300, 200)
        self.setWindowTitle('Menubar'); self.show()

def treta():
        print "TRETA"

def main():
        app = QtGui.QApplication(sys.argv)
        ex = Example()
        sys.exit(app.exec_())

if __name__ == '__main__':
        main()
